<title>砝码称重</title><link href="http://hzoi.com/tomorrow.css" rel="stylesheet"><div class="ui existing segment"><pre><code><span class="pl-cm">/*</span>
<span class="pl-cm">0 1 1 0 1 1</span>
<span class="pl-cm">*/</span>
<span class="pl-cp">#include</span><span class="pl-cpf">&lt;cstdio&gt;</span><span class="pl-cp"></span>
<span class="pl-cp">#define MAXN int(1e6+10)</span>
<span class="pl-kt">int</span> <span class="pl-n">dp</span><span class="pl-p">[</span><span class="pl-n">MAXN</span><span class="pl-p">];</span>
<span class="pl-kt">int</span> <span class="pl-n">w</span><span class="pl-p">[</span><span class="pl-n">MAXN</span><span class="pl-p">];</span>
<span class="pl-kt">int</span> <span class="pl-n">a</span><span class="pl-p">[]</span> <span class="pl-o">=</span> <span class="pl-p">{</span> <span class="pl-mi">0</span><span class="pl-p">,</span><span class="pl-mi">1</span><span class="pl-p">,</span><span class="pl-mi">2</span><span class="pl-p">,</span><span class="pl-mi">3</span><span class="pl-p">,</span><span class="pl-mi">5</span><span class="pl-p">,</span><span class="pl-mi">10</span><span class="pl-p">,</span><span class="pl-mi">20</span> <span class="pl-p">};</span>
<span class="pl-kt">int</span> <span class="pl-nf">main</span><span class="pl-p">()</span>
<span class="pl-p">{</span>
    <span class="pl-kt">int</span> <span class="pl-n">n</span> <span class="pl-o">=</span> <span class="pl-mi">0</span><span class="pl-p">,</span> <span class="pl-n">k</span><span class="pl-p">;</span>
    <span class="pl-k">for</span> <span class="pl-p">(</span><span class="pl-kt">int</span> <span class="pl-n">i</span> <span class="pl-o">=</span> <span class="pl-mi">1</span><span class="pl-p">;</span> <span class="pl-n">i</span> <span class="pl-o">&lt;=</span> <span class="pl-mi">6</span><span class="pl-p">;</span><span class="pl-o">++</span><span class="pl-n">i</span><span class="pl-p">)</span>
    <span class="pl-p">{</span>
        <span class="pl-n">scanf</span><span class="pl-p">(</span><span class="pl-s">&quot;%d&quot;</span><span class="pl-p">,</span> <span class="pl-o">&amp;</span><span class="pl-n">k</span><span class="pl-p">);</span>
        <span class="pl-k">for</span> <span class="pl-p">(</span><span class="pl-kt">int</span> <span class="pl-n">j</span> <span class="pl-o">=</span> <span class="pl-mi">1</span><span class="pl-p">;</span> <span class="pl-n">j</span> <span class="pl-o">&lt;=</span> <span class="pl-n">k</span><span class="pl-p">;</span> <span class="pl-o">++</span><span class="pl-n">j</span><span class="pl-p">)</span>
            <span class="pl-n">w</span><span class="pl-p">[</span><span class="pl-o">++</span><span class="pl-n">n</span><span class="pl-p">]</span> <span class="pl-o">=</span> <span class="pl-n">a</span><span class="pl-p">[</span><span class="pl-n">i</span><span class="pl-p">];</span>
    <span class="pl-p">}</span>
    <span class="pl-kt">int</span> <span class="pl-n">v</span> <span class="pl-o">=</span> <span class="pl-mi">0</span><span class="pl-p">;</span>
    <span class="pl-k">for</span> <span class="pl-p">(</span><span class="pl-kt">int</span> <span class="pl-n">i</span> <span class="pl-o">=</span> <span class="pl-mi">1</span><span class="pl-p">;</span> <span class="pl-n">i</span> <span class="pl-o">&lt;=</span> <span class="pl-n">n</span><span class="pl-p">;</span> <span class="pl-o">++</span><span class="pl-n">i</span><span class="pl-p">)</span>
        <span class="pl-n">v</span> <span class="pl-o">+=</span> <span class="pl-n">w</span><span class="pl-p">[</span><span class="pl-n">i</span><span class="pl-p">];</span>
    <span class="pl-n">dp</span><span class="pl-p">[</span><span class="pl-mi">0</span><span class="pl-p">]</span> <span class="pl-o">=</span> <span class="pl-mi">1</span><span class="pl-p">;</span>
    <span class="pl-k">for</span> <span class="pl-p">(</span><span class="pl-kt">int</span> <span class="pl-n">i</span> <span class="pl-o">=</span> <span class="pl-mi">1</span><span class="pl-p">;</span> <span class="pl-n">i</span> <span class="pl-o">&lt;=</span> <span class="pl-n">n</span><span class="pl-p">;</span><span class="pl-o">++</span><span class="pl-n">i</span><span class="pl-p">)</span>
    <span class="pl-k">for</span> <span class="pl-p">(</span><span class="pl-kt">int</span> <span class="pl-n">j</span> <span class="pl-o">=</span> <span class="pl-n">v</span><span class="pl-p">;</span> <span class="pl-n">j</span> <span class="pl-o">&gt;=</span> <span class="pl-n">w</span><span class="pl-p">[</span><span class="pl-n">i</span><span class="pl-p">];</span> <span class="pl-o">--</span><span class="pl-n">j</span><span class="pl-p">)</span>
        <span class="pl-n">dp</span><span class="pl-p">[</span><span class="pl-n">j</span><span class="pl-p">]</span> <span class="pl-o">+=</span> <span class="pl-n">dp</span><span class="pl-p">[</span><span class="pl-n">j</span> <span class="pl-o">-</span> <span class="pl-n">w</span><span class="pl-p">[</span><span class="pl-n">i</span><span class="pl-p">]];</span>
    <span class="pl-kt">int</span> <span class="pl-n">ans</span> <span class="pl-o">=</span> <span class="pl-mi">0</span><span class="pl-p">;</span>
    <span class="pl-k">for</span> <span class="pl-p">(</span><span class="pl-kt">int</span> <span class="pl-n">i</span> <span class="pl-o">=</span> <span class="pl-mi">1</span><span class="pl-p">;</span> <span class="pl-n">i</span> <span class="pl-o">&lt;=</span> <span class="pl-n">v</span><span class="pl-p">;</span><span class="pl-o">++</span><span class="pl-n">i</span><span class="pl-p">)</span>
    <span class="pl-k">if</span> <span class="pl-p">(</span><span class="pl-n">dp</span><span class="pl-p">[</span><span class="pl-n">i</span><span class="pl-p">])</span><span class="pl-o">++</span><span class="pl-n">ans</span><span class="pl-p">;</span>
    <span class="pl-n">printf</span><span class="pl-p">(</span><span class="pl-s">&quot;Total=%d</span><span class="pl-se">\n</span><span class="pl-s">&quot;</span><span class="pl-p">,</span> <span class="pl-n">ans</span><span class="pl-p">);</span>
    <span class="pl-k">return</span> <span class="pl-mi">0</span><span class="pl-p">;</span>
<span class="pl-p">}</span>
</cpde></pre></div>